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Archaebacteria differ from eubacteria in ______.
(a)cell wall structure
(b)mode of nutrition
(c)cell shape
(d)mode of reproduction

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Important Questions on Biological Classification
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Bacteria are grouped under four categories based on their shape. Study the given figure and identify A. B. C and D?

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Which one is a bacterial disease?

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In which of the animal dimorphic nucleus is found?

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'Diatoms' the chief producers in the ocean belongs to group

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The given statements describe a group of organisms. Which of the following group is referred here ?
(i) Instead of a cell wall they have a protein rich pellicle making their body flexible
(ii) They have flagella, a short and a long one
(iii) They show mixotroplic nutrition
(iv) They are connecting link between plants and animals

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Entamoeba histolytica has

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Match the following related to sexual reproduction in protozoa ?
List I | List II | ||
(i) | Hologamy | (a) | Plasmodium |
(ii) | Amphimixis | (b) | Monocystis |
(iii) | Anisogamy | (c) | Trichonympha |
(iv) | Isogamy | (d) | Union of pronuclei of the gamets |

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All protozoans are / have ______
